Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   4      tablespoons   red wine vinegar
   1      tablespoon    Dijon mustard
   2      tablespoons   red onion -- minced
   4                    garlic cloves -- minced
                        pepper -- to taste
   2      large         red bell peppers -- quartered
   2      large         green bell peppers -- quarter'

Preparation:

Preheat grill. In a small bowl, combine the mustard, onion, garlic and pepper. Place bell peppers on the grill and brush with the mustard mixture. Cook until lightly browned, then turn. Brush the other side and cook until browned and slightly softened. Serve hot or cold with what is left of the marinade.